Cosmics test plans

Objectives:

• Test drive the AIEC software
• Demonstrate that the CDC gain is stable

Schedule:

• 2022-02-25 Fri. - Test fully automated CDC HV control
• 2022-03-01 Tue. - Start system
• 2022-03-07 Tue. - Change configuration (left/right -> top/bottom)
• 2022-03-14 Mon. - End test

Strategy:

• Designate 2130V as the nominal HV for cosmics, to raise more hits above the noise, but keep 20V headroom for the AI.
• Tell the AI that the HVB current is constant at 9uA so that it can operate within the range of its trained data
• Use 1V steps and 1h runs
  • Starting new run every hour for 2 weeks may not be feasible. Devise scheme to break up long runs?

Needs:

• AIEC software to read epics and wait for a stable period before calculating the gain and setting the HV
  • What determines "stable"?
  • Who?

• Method for scaling the HVB current to what it would be at the nominal HV before running the AI - will not be needed for cosmics but will be needed for CPP.
  • Is this something that could be tested during cosmics run? (yes=implement, no=defer)

• Script to project dE/dx for 4-10 GeV tracks, fit it and calculate the gain factor
  • Is this for needed for cosmics? (monitoring?)

• Code to set whole quadrants to same value(cdc_tool.py)

Questions:

• Do we need to force a B field in the reconstruction sw (wait for Simon to answer)
  • Simon reported progress on straight track reconstruction (email to David and Naomi Feb. 24th)
• Full DAQ or standalone DAQ?
  • Ask Sergey for configuration with only CDC, BCAL
• When are we doing this?
  • March 1-14, 2022